In which group are the non-metal elements placed in a vertical column on the right side of the periodic table?
The correct answer is D
The total age of A, B and C eight years hence will be 98 years. Find the age of C three years hence, if the present age of A and B is 30 years and 25 ye...
The sum of the present ages of two cousins is 54 years. Eleven years ago, the older one was thrice as old as the younger one. What is the present age of...
A's age : B's age is 4 : 3. After 6 years, A will be 26 years. What is B's present age?
Present ages of P and Q are in the ratio 3:5 respectively. If Q’s age, 16 years hence from now will be 6 times of P’s age, 6 years ago from now, the...
The respective ratio of the present ages of A and B is 2:3. The present age of C is 20% more than that of B. The sum of the present ages of A, B and C i...
The current ratio of the ages of 'Armaan' and 'Bittu' is such that six years from now, it will be 5:4, respectively. Presently, 'Chetna's age exceeds 'B...
A is 4 years older than B while C is 6 years younger than B. The ratio of age of A, 5 years hence and age of B, 3 years ago is 3:2. What was age of C, 6...
Before 8 years ago, the ratio of age of anil and Sunil is 5:7, after 6 years from now the ratio of their ages become 7:9, find the sum of present age of...
Rohan's present age is 3/7 times the age of his mother. After four years, he will be one- half of the age of his mother. How old is his mother at present?
The average age of a group of 20 persons is found to be 27 years. Later it is found that age of two of the persons is calculated as 25 and 30 instead of...
